• 승인 2019.05.21 22:00
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The Gateway station, as visualised here, will allow us to learn more about exploring and travelling in deep space

The Gateway station, as visualised here, will allow us to learn more about exploring and travelling in deep space Adistance of 410,000km. That’s how far away astronauts will be when they’re living aboard a new space station that’s set to be built in orbit around the Moon. To put it in context, you could fit 30 Earth-sized planets across that distance. Currently in development, the ‘Lunar Orbital Platform-Gateway’ will take humans further from Earth than ever before. Known as Gateway for short, and previously named Deep Space Gateway, the space station is being developed by NASA and other space agencies, including the European Space Agency (ESA) and Russia’s Roscosmos. It will be a replacement for the International Space Station (ISS), which this month celebrates its 20th birthday. While the fate of the ISS hangs in the balance, one thing is certain – the White House has asked NASA to stop funding the ISS in 2025. Instead, the Trump administration wants the space agency to focus its efforts on returning to the Moon and then to Mars.


And that’s where Gateway comes in. “Gateway has been developed to take humans beyond low Earth orbit and out into the cosmos,” says Dr James Carpenter, an ESA scientist working on the new space station. “The idea is that it provides an infrastructure for future exploration, and somewhere we can learn how to live and work in deep space.” Whereas the ISS flies in low Earth orbit, just 400km (250 miles) above our heads, Gateway will be hundreds of thousands of kilometres away. Gateway will make the surface of the Moon one short hop for astronauts, allowing them to explore like never before, and creating a new generation of Moonwalkers in the process. It’ll also enable a new wave of science experiments to probe some of the mysteries of deep space. In the longer term, it is hoped that Gateway will act as a service station for spacecraft taking astronauts to Mars and beyond.


But building a space station way out in lunar orbit is strewn with challenges. How do you lug tonnes of hardware all the way out to the Moon? How do you keep astronauts safe? Unlike those on the ISS, the astronauts aboard Gateway won’t be shielded from cosmic radiation by Earth’s magnetic field. And they can’t just be whisked back home if something goes wrong. Aboard the ISS, they can return in hours. The journey between Earth and the Moon takes days.

When NASA’s Space Launch System, as seen in this illustration, is completed, it will be the world’s most powerful rocket and will be used for building Gateway and delivering astronauts. SIZE MATTERS


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